Johannes g-erabd erederik hooker



J. G. F. ROOKER.

MARKING MACHINE. APPLICATION FILED NOV. 22, 1911.

1,313,016. Patented Aug. 12, 1919.

D5 dafi ammaker J'OHANNES GERARD FREDERIK ROCKER, OF VRIJENBAN, NEAR DELFT,1\TETI-IERLANDS.

MARKING-MACHINE.

Specification of Letters Patent.

Patented Aug. 12, 1919.

Application filed November 22, 1917. Serial No. 203,352. 7 1

To all whom itmag concern:

Be it known that I, JOHANNES' GERARD FREDERIK .Roonnn, subject of the Queen of the Netherlands, residing at Vrijenban, near Delft, Province of Zuid-Holland, in the Kingdom of the Netherlands, have invented certain new and useful Improvements in Marking-Machines, of which the following is a specification.

The invention relates tomarking machines and has for its object to provide a very simple and cheap means for automatically effecting the angular displacement of the feed dog of a sewing machine to permit a character, figure, word or number to be sewed by the machine.

According to the invention I employ a r0- tatable drum provided with longitudinal adjacent rows of blocks each provided with a groove, the direction and the depth of which corresponds to a part of the character, figure, or the like. These grooves form a continuous groove of the desired shape according to the figure, word, character or number to be sewed and with said groove a pin cooperates, the pin being adapted to be moved to and fro in a rectilinear direction, against the action of a spring, which continuously keeps the pin in contact with the bottom of the groove, said pin being also rotatable to and fro in a horizontal plane. In rotating the drum this pin consequently will always follow the contour of the groove.

The rectilinear to and fro movement and the to and fro rotating movement of the pin according to the invention are directly transmitted to the feed dog of the sewing machine so that the dog and thereby the material to be marked will be displaced with respect to the needle of the sewing machine in correspondence with the pin movement.

The invention will be fully explained hereinafter with reference to the accompanying drawing on which- Figure 1 is a top view of the marking machine, whereby only the novel parts have been illustrated.

Fig. 2 is a side elevation, while Fig. 3 shows diagrammatically a top view of a modification.

The drum 1 is provided with longitudinal rows of grooved blocks 2, the grooves of which form a continuous circumferential groove 3 of the desired direction. The shape of the bottom of this groove is shown in Fig. 2. r

spring 5 in a casing 6 in which the pin is.

slidably mounted. Thepin forms the front end of a rod 7 which projects from the cas ing and is provided at the other end with a feed dog in the form of a ringS, for the purpose to be described hereinafter. The casing 6 is provided with pivots 9 about which it is rotatable to and fro in a horizontal plane. The pin consequently effects a combined rectilinear to and fro movement in the direction of the drum and opposite thereto and a to and fro rotation, which motions together correspond to a character, figure or the like to be sewed in the piece of material. This combined motion is imparted to the above mentioned feed dog 8. This dog displaces the material to be sewed according to said motion with respect tothe needle 10 of the sewing machine, so that consequently the desired character, figure or the like is sewed in the piece of material.

A different combination of characteror figure blocks with otherwise directed grooves of another depth will give a corresponding other mark in the piece of material. In case it is desired to automatically mark hitherto embroidered characters and it being usual in such cases to make the dimensions of the mark in correspondence with the dimensions of the piece of material, then it is advantageous to use the device which is shown diagraimnatically in Fig. 3. 11 is a drum provided with blocks 12. The slidable and also to and fro rotatable pin has in this modification been substituted by a pantograph. By modifyingthe proportion between the arms of the parallelogram it is possible with the same drum 11 with blocks 12 to modify the dimensions of the figure, character or the like to be sewed by the needle 13.

By displacing the fixed center of rotation from 14 to 15 or 16, etc., the character, having a size one in placing the fixed center of rotation in the point 14, will have a size two in placing the fixed center of rotation in the point 15 etc.

Claims.

1. In a marking machine of the character described, a rotatable drum provided with longitudinal rows of grooved blocks, the grooves of the blocks being difierent and of different depths according to the character, figure or the like to be sewed, and a pivoted casing adjacent the drum, a sliding and spring pressed pin in the casing and engaging the grooves of sald blocks, and a gripping member to Which the pm is secured for gripping the plece of material to be sewed.

2. In a marking machine of the character 3. In a marking machine of the character described, a rotatable drum provided With a serpentine groove of varying depth, a pivoted casing adjacent the drum, and a sliding and spring pressed pin in the casing and engaging the groove of the drum, the pin-being adapted to be secured to a feed dog of a sewing machine.

In testimony whereof I have hereunto set my hand.

JOHANNES GERARD FREDERIK ROOKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

